* Problem with string.format (Lua)
@ 2018-01-14 12:05 Fabrice Couvreur
2018-01-14 12:13 ` Joseph Canedo
0 siblings, 1 reply; 5+ messages in thread
From: Fabrice Couvreur @ 2018-01-14 12:05 UTC (permalink / raw)
To: mailing list for ConTeXt users
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Hello,
I start with Lua and I try to display my result with 4 decimal places
without success.
Thank you
Fabrice
\startluacode
function Binomial(n,k,p)
if k > n then return nil end
if k > n/2 then k = n - k end
numer, denom = 1, 1
for i = 1, k do
numer = numer * ( n - i + 1 )
denom = denom * i
end
return (numer/denom) * p^k * (1-p)^(n-k)
end
\stopluacode
\starttext
\ctxlua{print(string.format("%g",Binomial(100,60,0.25)))}
\stoptext
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^ permalink raw reply [flat|nested] 5+ messages in thread* Re: Problem with string.format (Lua) 2018-01-14 12:05 Problem with string.format (Lua) Fabrice Couvreur @ 2018-01-14 12:13 ` Joseph Canedo 2018-01-14 12:58 ` Hans Hagen 0 siblings, 1 reply; 5+ messages in thread From: Joseph Canedo @ 2018-01-14 12:13 UTC (permalink / raw) To: mailing list for ConTeXt users [-- Attachment #1.1: Type: text/plain, Size: 854 bytes --] Hi Fabrice, string.format behaves more or less as C printf. You probably need to specify %.4g in 1st argument. Hope this helps Best Joseph De : Fabrice Couvreur Envoyé le :dimanche 14 janvier 2018 13:05 À : mailing list for ConTeXt users Objet :[NTG-context] Problem with string.format (Lua) Hello, I start with Lua and I try to display my result with 4 decimal places without success. Thank you Fabrice \startluacode function Binomial(n,k,p) if k > n then return nil end if k > n/2 then k = n - k end numer, denom = 1, 1 for i = 1, k do numer = numer * ( n - i + 1 ) denom = denom * i end return (numer/denom) * p^k * (1-p)^(n-k) end \stopluacode \starttext \ctxlua{print(string.format("%g",Binomial(100,60,0.25)))} \stoptext [-- Attachment #1.2: Type: text/html, Size: 3664 bytes --] [-- Attachment #2: Type: text/plain, Size: 492 bytes --] ___________________________________________________________________________________ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://context.aanhet.net archive : https://bitbucket.org/phg/context-mirror/commits/ wiki : http://contextgarden.net ___________________________________________________________________________________ ^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: Problem with string.format (Lua) 2018-01-14 12:13 ` Joseph Canedo @ 2018-01-14 12:58 ` Hans Hagen 2018-01-14 20:50 ` Fabrice Couvreur 0 siblings, 1 reply; 5+ messages in thread From: Hans Hagen @ 2018-01-14 12:58 UTC (permalink / raw) To: mailing list for ConTeXt users, Joseph Canedo On 1/14/2018 1:13 PM, Joseph Canedo wrote: > Hi Fabrice, > > string.format behaves more or less as C printf. You probably need to > specify %.4g in 1st argument. > > Hope this helps > > Best > > Joseph > > *De : *Fabrice Couvreur <mailto:fabrice1.couvreur@gmail.com> > *Envoyé le :*dimanche 14 janvier 2018 13:05 > *À : *mailing list for ConTeXt users <mailto:ntg-context@ntg.nl> > *Objet :*[NTG-context] Problem with string.format (Lua) > > Hello, > I start with Lua and I try to display my result with 4 decimal places > without success. > Thank you > Fabrice > > \startluacode > function Binomial(n,k,p) > if k > n then return nil end > if k > n/2 then k = n - k end > > numer, denom = 1, 1 > for i = 1, k do > numer = numer * ( n - i + 1 ) > denom = denom * i > end > return (numer/denom) * p^k * (1-p)^(n-k) > end > > \stopluacode > > \starttext > \ctxlua{print(string.format("%g",Binomial(100,60,0.25)))} > \stoptext the % should be \letterpercent btw, use locals for numer and denom you can also do this: \startluacode function document.Binomial(n,k,p) if k > n then return nil end if k > n/2 then k = n - k end local numer, denom = 1, 1 for i=1,k do numer = numer * ( n - i + 1 ) denom = denom * i end context("%0.5g",(numer/denom) * p^k * (1-p)^(n-k)) end \stopluacode \starttext \ctxlua{document.Binomial(100,60,0.25)} \stoptext in general context("format",....) is a bit more powerful than using format -- ----------------------------------------------------------------- Hans Hagen | PRAGMA ADE Ridderstraat 27 | 8061 GH Hasselt | The Netherlands tel: 038 477 53 69 | www.pragma-ade.nl | www.pragma-pod.nl ----------------------------------------------------------------- ___________________________________________________________________________________ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://context.aanhet.net archive : https://bitbucket.org/phg/context-mirror/commits/ wiki : http://contextgarden.net ___________________________________________________________________________________ ^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: Problem with string.format (Lua) 2018-01-14 12:58 ` Hans Hagen @ 2018-01-14 20:50 ` Fabrice Couvreur 2018-01-14 23:02 ` Hans Hagen 0 siblings, 1 reply; 5+ messages in thread From: Fabrice Couvreur @ 2018-01-14 20:50 UTC (permalink / raw) To: mailing list for ConTeXt users [-- Attachment #1.1: Type: text/plain, Size: 2943 bytes --] Hi Hans, Your code runs perfectly, thanks. However, if I replace % with \letterpercent, my code does not run \ctxlua{print(string.format("\letterpercent g",Binomial(100,60,0.25)))} Thank you Fabrice 2018-01-14 13:58 GMT+01:00 Hans Hagen <pragma@wxs.nl>: > On 1/14/2018 1:13 PM, Joseph Canedo wrote: > >> Hi Fabrice, >> >> string.format behaves more or less as C printf. You probably need to >> specify %.4g in 1st argument. >> >> Hope this helps >> >> Best >> >> Joseph >> >> *De : *Fabrice Couvreur <mailto:fabrice1.couvreur@gmail.com> >> *Envoyé le :*dimanche 14 janvier 2018 13:05 >> *À : *mailing list for ConTeXt users <mailto:ntg-context@ntg.nl> >> *Objet :*[NTG-context] Problem with string.format (Lua) >> >> Hello, >> I start with Lua and I try to display my result with 4 decimal places >> without success. >> Thank you >> Fabrice >> >> \startluacode >> function Binomial(n,k,p) >> if k > n then return nil end >> if k > n/2 then k = n - k end >> >> numer, denom = 1, 1 >> for i = 1, k do >> numer = numer * ( n - i + 1 ) >> denom = denom * i >> end >> return (numer/denom) * p^k * (1-p)^(n-k) >> end >> >> \stopluacode >> >> \starttext >> \ctxlua{print(string.format("%g",Binomial(100,60,0.25)))} >> \stoptext >> > > the % should be \letterpercent > > btw, use locals for numer and denom > > you can also do this: > > \startluacode > function document.Binomial(n,k,p) > if k > n then > return nil > end > if k > n/2 then > k = n - k > end > local numer, denom = 1, 1 > for i=1,k do > numer = numer * ( n - i + 1 ) > denom = denom * i > end > context("%0.5g",(numer/denom) * p^k * (1-p)^(n-k)) > end > \stopluacode > > \starttext > \ctxlua{document.Binomial(100,60,0.25)} > \stoptext > > in general > > context("format",....) > > is a bit more powerful than using format > > > > > -- > > ----------------------------------------------------------------- > Hans Hagen | PRAGMA ADE > Ridderstraat 27 | 8061 GH Hasselt | The Netherlands > tel: 038 477 53 69 | www.pragma-ade.nl | www.pragma-pod.nl > ----------------------------------------------------------------- > ____________________________________________________________ > _______________________ > If your question is of interest to others as well, please add an entry to > the Wiki! > > maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/list > info/ntg-context > webpage : http://www.pragma-ade.nl / http://context.aanhet.net > archive : https://bitbucket.org/phg/context-mirror/commits/ > wiki : http://contextgarden.net > ____________________________________________________________ > _______________________ [-- Attachment #1.2: Type: text/html, Size: 4815 bytes --] [-- Attachment #2: Type: text/plain, Size: 492 bytes --] ___________________________________________________________________________________ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://context.aanhet.net archive : https://bitbucket.org/phg/context-mirror/commits/ wiki : http://contextgarden.net ___________________________________________________________________________________ ^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: Problem with string.format (Lua) 2018-01-14 20:50 ` Fabrice Couvreur @ 2018-01-14 23:02 ` Hans Hagen 0 siblings, 0 replies; 5+ messages in thread From: Hans Hagen @ 2018-01-14 23:02 UTC (permalink / raw) To: mailing list for ConTeXt users, Fabrice Couvreur On 1/14/2018 9:50 PM, Fabrice Couvreur wrote: > Hi Hans, > Your code runs perfectly, thanks. However, if I replace % with > \letterpercent, my code does not run > > \ctxlua{print(string.format("\letterpercent g",Binomial(100,60,0.25)))} because print prints to the console > Thank you > Fabrice > > 2018-01-14 13:58 GMT+01:00 Hans Hagen <pragma@wxs.nl > <mailto:pragma@wxs.nl>>: > > On 1/14/2018 1:13 PM, Joseph Canedo wrote: > > Hi Fabrice, > > string.format behaves more or less as C printf. You probably > need to specify %.4g in 1st argument. > > Hope this helps > > Best > > Joseph > > *De : *Fabrice Couvreur <mailto:fabrice1.couvreur@gmail.com > <mailto:fabrice1.couvreur@gmail.com>> > *Envoyé le :*dimanche 14 janvier 2018 13:05 > *À : *mailing list for ConTeXt users <mailto:ntg-context@ntg.nl > <mailto:ntg-context@ntg.nl>> > *Objet :*[NTG-context] Problem with string.format (Lua) > > Hello, > I start with Lua and I try to display my result with 4 decimal > places without success. > Thank you > Fabrice > > \startluacode > function Binomial(n,k,p) > if k > n then return nil end > if k > n/2 then k = n - k end > > numer, denom = 1, 1 > for i = 1, k do > numer = numer * ( n - i + 1 ) > denom = denom * i > end > return (numer/denom) * p^k * (1-p)^(n-k) > end > > \stopluacode > > \starttext > \ctxlua{print(string.format("%g",Binomial(100,60,0.25)))} > \stoptext > > > the % should be \letterpercent > > btw, use locals for numer and denom > > you can also do this: > > \startluacode > function document.Binomial(n,k,p) > if k > n then > return nil > end > if k > n/2 then > k = n - k > end > local numer, denom = 1, 1 > for i=1,k do > numer = numer * ( n - i + 1 ) > denom = denom * i > end > context("%0.5g",(numer/denom) * p^k * (1-p)^(n-k)) > end > \stopluacode > > \starttext > \ctxlua{document.Binomial(100,60,0.25)} > \stoptext > > in general > > context("format",....) > > is a bit more powerful than using format > > > > > -- > > ----------------------------------------------------------------- > Hans Hagen | PRAGMA ADE > Ridderstraat 27 | 8061 GH Hasselt | The Netherlands > tel: 038 477 53 69 | www.pragma-ade.nl > <http://www.pragma-ade.nl> | www.pragma-pod.nl > <http://www.pragma-pod.nl> > ----------------------------------------------------------------- > ___________________________________________________________________________________ > If your question is of interest to others as well, please add an > entry to the Wiki! > > maillist : ntg-context@ntg.nl <mailto:ntg-context@ntg.nl> / > http://www.ntg.nl/mailman/listinfo/ntg-context > <http://www.ntg.nl/mailman/listinfo/ntg-context> > webpage : http://www.pragma-ade.nl / http://context.aanhet.net > archive : https://bitbucket.org/phg/context-mirror/commits/ > <https://bitbucket.org/phg/context-mirror/commits/> > wiki : http://contextgarden.net > ___________________________________________________________________________________ > > > > > ___________________________________________________________________________________ > If your question is of interest to others as well, please add an entry to the Wiki! > > maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context > webpage : http://www.pragma-ade.nl / http://context.aanhet.net > archive : https://bitbucket.org/phg/context-mirror/commits/ > wiki : http://contextgarden.net > ___________________________________________________________________________________ > -- ----------------------------------------------------------------- Hans Hagen | PRAGMA ADE Ridderstraat 27 | 8061 GH Hasselt | The Netherlands tel: 038 477 53 69 | www.pragma-ade.nl | www.pragma-pod.nl ----------------------------------------------------------------- ___________________________________________________________________________________ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://context.aanhet.net archive : https://bitbucket.org/phg/context-mirror/commits/ wiki : http://contextgarden.net ___________________________________________________________________________________ ^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2018-01-14 23:02 UTC | newest] Thread overview: 5+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2018-01-14 12:05 Problem with string.format (Lua) Fabrice Couvreur 2018-01-14 12:13 ` Joseph Canedo 2018-01-14 12:58 ` Hans Hagen 2018-01-14 20:50 ` Fabrice Couvreur 2018-01-14 23:02 ` Hans Hagen
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